Annual report pursuant to Section 13 and 15(d)

Income Taxes - Effective Tax Rate Reconciliation (Details)

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Income Taxes - Effective Tax Rate Reconciliation (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2019
Dec. 31, 2018
Dec. 31, 2017
Income Tax Expense Reconciliation      
Tax at U.S. statutory rates $ (790) $ 3,459 $ 503
State income taxes, net of federal tax benefit 165 269 66
State valuation allowance (60) (315) 8
Manufacturing exemption 0 0 (117)
Stock option compensation (155) (39) 0
Executive compensation limitation 57 0 0
Other nondeductible expenses 64 0 0
Rate change effects 0 0 (381)
Other, net (8) 2 58
Total $ (727) $ 3,376 $ 137
Effective Tax Rate Reconciliation      
Tax at U.S. statutory rates 21.00% 21.00% 34.00%
State income taxes, net of federal tax benefit (4.40%) 1.60% 4.40%
State valuation allowance 1.60% (1.90%) 0.60%
Manufacturing exemption 0.00% 0.00% (7.90%)
Stock option compensation 4.10% (0.20%) 0.00%
Executive compensation limitation (1.50%) 0.00% 0.00%
Other nondeductible expenses (1.70%) 0.00% 0.00%
Rate change effects 0.00% 0.00% (25.80%)
Other, net 0.20% 0.00% 4.00%
Total 19.30% 20.50% 9.30%